Help me fill the missing pieces of code

[cool]

Could anybody help me in writing some code whose comments are in Capital letters in the code below?

Also pl. confirm whether I am in the right direction?

//Client-side JavaScript
if (window.location.href.endsWith('map?section=A')) {

	if (!ajaxify.data.loggedIn) {	//If the user is not logged in, raise the error
		console.log(not_logged_in);
                //DISPLAY THE ERROR IN LEFT BOTTOM (AS NODEBB DISPLAYS IT)
                //REDIRECT THE USER TO LOGIN SCREEN
               //AFTER LOGIN IS SUCCESSFUL, HE IS REDIRECTED BACK TO THE /map ROUTE
	}
	else {		//user is logged in
		console.log("Logged in");
		var location;

	      //CHECK WHETHER THE USER LOCATION IS STORED IN THE DB
	     if (true) {			//Fetch the location from the db and display that on the map
		userLocation = [Lat, Lng];				//LAT AND LNG FETCHED FROM THE USER DB
		map = new L.map('mapid').setView(userLocation, 10);
		location = userLocation;
	   }
...
}				//End of map?section=A

I will be really grateful if anybody can help me out including writing the controller for these two features and storing the coordinates in the db. Today I spent the entire day but was not successful.

Thanking you in anticipation

[cool]

I am able to solve the first issue. I needed to add checks in map.tpl instead of relying upon pure client-side JS solution.